ZyXEL Communications 792H SUA Single User Account Versus NAT, Mapping types, NAT Mapping Types

Prestige 792H G.SHDSL Router

5.Server: This type allows you to specify inside servers of different services behind the NAT to be accessible to the outside world.

Port numbers do not change for One-to-One and Many-to-Many No Overload NAT

mapping types.

The following table summarizes these types.

Table 6-2 NAT Mapping Types

TYPE	IP MAPPING	SMT ABBREVIATION
One-to-One	ILA1ÅÆ IGA1	1:1
Many-to-One (SUA/PAT)	ILA1ÅÆ IGA1	M:1
	ILA2ÅÆ IGA1
	…
Many-to-Many Overload	ILA1ÅÆ IGA1	M:M Ov
	ILA2ÅÆ IGA2
	ILA3ÅÆ IGA1
	ILA4ÅÆ IGA2
	…
Many-to-Many No Overload	ILA1ÅÆ IGA1	M:M No OV
	ILA2ÅÆ IGA2
	ILA3ÅÆ IGA3
	…
Server	Server 1 IPÅÆ IGA1	Server
	Server 2 IPÅÆ IGA1
	Server 3 IPÅÆ IGA1

6.2SUA (Single User Account) Versus NAT

SUA (Single User Account) is a ZyNOS implementation of a subset of NAT that supports two types of mapping, Many-to-Oneand Server. The Prestige also supports Full Feature NAT to map multiple global IP addresses to multiple private LAN IP addresses of clients or servers using mapping types as outlined in Table 6-2.

6-4 NAT